Lactic Acid sits in our formulas for one job: refining the feel and look of texture. We file it under Smoothing in this glossary because that is the effect its evidence actually supports, not because it is the most flattering label available.

Refinement in the surface

The mechanism is the one stated in the summary above, and we have deliberately not extended it. Where a supplier or a competitor would reach for a bigger promise, the sentence we publish stops where the research stops.

Refinement in the evidence

Our source is a randomised controlled trial published in an indexed journal, recorded as Smith 1996 PMID 8784274. You can read it yourself at PubMed 8784274. We grade that as the strongest kind of evidence we recognise.

Refinement and its limits

The research behind Lactic Acid studies the ingredient, not the finished Opuliss product it sits in. It supports what Lactic Acid does. It is not a trial of our formula, and we will not present it as one.

Cosmetic claims describe how skin looks and feels. Nothing here is a medical claim, and nothing here treats a condition.